{
  "params": {
    "biome": {
      "type": "choice",
      "options": [
        "rock",
        "grass",
        "desert",
        "snow",
        "volcanic",
        "alien"
      ],
      "default": "grass",
      "label": "Biome",
      "describe": "Shared by every Terrain piece: grass (grey rock with turf on top), rock (bare grey with moss), desert (orange sandstone), snow (blue-grey rock under snow), volcanic (black basalt), alien (blue rock on violet ground)."
    },
    "size": {
      "type": "range",
      "min": 1.6,
      "max": 2.8,
      "step": 0.1,
      "default": 2.2,
      "label": "Opening",
      "describe": "Height of the cave mouth in metres (its width is about 0.85 of that). A person is 1.8 m."
    },
    "crystals": {
      "type": "choice",
      "options": [
        "none",
        "cyan",
        "violet",
        "amber",
        "green"
      ],
      "default": "cyan",
      "label": "Crystals",
      "describe": "Glowing crystal clusters at the mouth and on the tunnel walls: none, cyan, violet, amber or green. They glow at night."
    },
    "seed": {
      "type": "range",
      "min": 1,
      "max": 50,
      "step": 1,
      "default": 4,
      "label": "Seed",
      "describe": "Changes the mound, the crags round the arch, the boulders and the decor."
    }
  },
  "presets": {
    "amethyst grotto": {
      "biome": "rock",
      "crystals": "violet"
    },
    "desert hideout": {
      "biome": "desert",
      "crystals": "none",
      "size": 1.8
    },
    "ice cave": {
      "biome": "snow",
      "crystals": "cyan",
      "size": 2.6
    }
  },
  "night": {
    "crystal": {
      "zone": "crystal",
      "intensity": 1.5,
      "describe": "Crystal clusters glow in their own colour."
    },
    "lava": {
      "zone": "lava",
      "color": "#ff7a1a",
      "intensity": 1.6,
      "describe": "Lava (volcanic biome) and ember cracks glow orange."
    },
    "glow": {
      "zone": "glow",
      "intensity": 1.2,
      "describe": "Alien liquid, bulb plants and crystals glow in their own teal and pink."
    }
  }
}